import sys
print(sys.version)

class AnonymousSurvey():
    """收集匿名调查问卷的答案"""
    def __init__(self, question):
        """存储一个问题， 并为存储答案做准备"""
        self.question = question
        self.responses = []

    def show_question(self):
        """显示调查问卷"""
        print(self.question)

    def store_response(self, new_response):
        """存储单份调查答卷"""
        self.responses.append(new_response)

    def show_results(self):
        """显示收集到的所有答卷"""
        print("Survey results:")
        for response in self.responses:
            print('- ' + response)

#aa=AnonymousSurvey('ask?')
#print(aa.question)
#aa.show_question()
#aa.store_response('anser1')
#aa.store_response('anser2')
#print(aa.responses)
#aa.show_results()